Refractive indices and density of cryovacuum-deposited thin films of methane in the vicinity of the α–β-transition temperature
Experimental studies of the effect of methane condensation temperature on the value of the refractive index and density of the resulting thin films are reported. The main unit of the installation is a high-vacuum chamber, which routinely operates at 10⁻⁸ - 10⁻⁶ Torr. Measurements using a two-beam He...
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| Veröffentlicht in: | Физика низких температур |
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| Datum: | 2017 |
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Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2017
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| Zitieren: | Refractive indices and density of cryovacuum-deposited thin films of methane in the vicinity of the α–β-transition temperature / A. Drobyshev, A. Aldiyarov, D. Sokolov, A. Shinbayeva // Физика низких температур. — 2017. — Т. 43, № 6. — С. 909-913. — Бібліогр.: 37 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1862608993296318464 |
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| author | Drobyshev, A. Aldiyarov, A. Sokolov, D. Shinbayeva, A. |
| author_facet | Drobyshev, A. Aldiyarov, A. Sokolov, D. Shinbayeva, A. |
| citation_txt | Refractive indices and density of cryovacuum-deposited thin films of methane in the vicinity of the α–β-transition temperature / A. Drobyshev, A. Aldiyarov, D. Sokolov, A. Shinbayeva // Физика низких температур. — 2017. — Т. 43, № 6. — С. 909-913. — Бібліогр.: 37 назв. — англ. |
| collection | DSpace DC |
| container_title | Физика низких температур |
| description | Experimental studies of the effect of methane condensation temperature on the value of the refractive index and density of the resulting thin films are reported. The main unit of the installation is a high-vacuum chamber, which routinely operates at 10⁻⁸ - 10⁻⁶ Torr. Measurements using a two-beam He–Ne laser interferometer in the vicinity of the methane phase transition temperature T = 20.4 K in the range of 14–32 K were carried out. It has been shown that in the vicinity of T = 20 K the temperature dependence of the refractive index undergoes an abrupt decrease with decreasing temperature. It is assumed that this gap is the result of the phase transition from the orientational disordered phase (α-phase) to the partially ordered phase (β-phase) of solid methane. The calculations of the polarizability of the methane molecules in the solid phase at two values of the deposition temperature T = 16 K and T = 30 K were performed using the Lorentz–Lorenz equation.
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| first_indexed | 2025-11-28T18:40:25Z |
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| id | nasplib_isofts_kiev_ua-123456789-129508 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 0132-6414 |
| language | English |
| last_indexed | 2025-11-28T18:40:25Z |
| publishDate | 2017 |
| publisher | Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
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| spelling | Drobyshev, A. Aldiyarov, A. Sokolov, D. Shinbayeva, A. 2018-01-19T20:26:41Z 2018-01-19T20:26:41Z 2017 Refractive indices and density of cryovacuum-deposited thin films of methane in the vicinity of the α–β-transition temperature / A. Drobyshev, A. Aldiyarov, D. Sokolov, A. Shinbayeva // Физика низких температур. — 2017. — Т. 43, № 6. — С. 909-913. — Бібліогр.: 37 назв. — англ. 0132-6414 PACS: 61.50.–f, 78.30.–j, 68.35.Rh https://nasplib.isofts.kiev.ua/handle/123456789/129508 Experimental studies of the effect of methane condensation temperature on the value of the refractive index and density of the resulting thin films are reported. The main unit of the installation is a high-vacuum chamber, which routinely operates at 10⁻⁸ - 10⁻⁶ Torr. Measurements using a two-beam He–Ne laser interferometer in the vicinity of the methane phase transition temperature T = 20.4 K in the range of 14–32 K were carried out. It has been shown that in the vicinity of T = 20 K the temperature dependence of the refractive index undergoes an abrupt decrease with decreasing temperature. It is assumed that this gap is the result of the phase transition from the orientational disordered phase (α-phase) to the partially ordered phase (β-phase) of solid methane. The calculations of the polarizability of the methane molecules in the solid phase at two values of the deposition temperature T = 16 K and T = 30 K were performed using the Lorentz–Lorenz equation. This research was supported by the Ministry of Education
 and Science of the Republic of Kazakhstan, Grant
 N 3118/GF4-15. Thanks to PhD Tokmoldin Nurlan for
 discussions during the course of the work and useful comments
 on this manuscript. en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур Физические свойства криокристаллов Refractive indices and density of cryovacuum-deposited thin films of methane in the vicinity of the α–β-transition temperature Article published earlier |
| spellingShingle | Refractive indices and density of cryovacuum-deposited thin films of methane in the vicinity of the α–β-transition temperature Drobyshev, A. Aldiyarov, A. Sokolov, D. Shinbayeva, A. Физические свойства криокристаллов |
| title | Refractive indices and density of cryovacuum-deposited thin films of methane in the vicinity of the α–β-transition temperature |
| title_full | Refractive indices and density of cryovacuum-deposited thin films of methane in the vicinity of the α–β-transition temperature |
| title_fullStr | Refractive indices and density of cryovacuum-deposited thin films of methane in the vicinity of the α–β-transition temperature |
| title_full_unstemmed | Refractive indices and density of cryovacuum-deposited thin films of methane in the vicinity of the α–β-transition temperature |
| title_short | Refractive indices and density of cryovacuum-deposited thin films of methane in the vicinity of the α–β-transition temperature |
| title_sort | refractive indices and density of cryovacuum-deposited thin films of methane in the vicinity of the α–β-transition temperature |
| topic | Физические свойства криокристаллов |
| topic_facet | Физические свойства криокристаллов |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/129508 |
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